bes  Updated for version 3.17.0
BESDataResponseHandler.cc
1 // BESDataResponseHandler.cc
2 
3 // This file is part of bes, A C++ back-end server implementation framework
4 // for the OPeNDAP Data Access Protocol.
5 
6 // Copyright (c) 2004-2009 University Corporation for Atmospheric Research
7 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
8 //
9 // This library is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU Lesser General Public
11 // License as published by the Free Software Foundation; either
12 // version 2.1 of the License, or (at your option) any later version.
13 //
14 // This library is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 // Lesser General Public License for more details.
18 //
19 // You should have received a copy of the GNU Lesser General Public
20 // License along with this library; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 //
23 // You can contact University Corporation for Atmospheric Research at
24 // 3080 Center Green Drive, Boulder, CO 80301
25 
26 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
27 // Please read the full copyright statement in the file COPYRIGHT_UCAR.
28 //
29 // Authors:
30 // pwest Patrick West <pwest@ucar.edu>
31 // jgarcia Jose Garcia <jgarcia@ucar.edu>
32 
33 #include <cstdlib>
34 #include <cerrno>
35 #include <cstring>
36 
37 #include "BESDataResponseHandler.h"
38 #include "BESDataDDSResponse.h"
39 #include "BESRequestHandlerList.h"
40 #include "BESDapNames.h"
41 #include "BESDataNames.h"
42 //#include "BESDapTransmit.h"
43 #include "BESContextManager.h"
44 #include "BESInternalError.h"
45 #include "BESDebug.h"
46 
47 BESDataResponseHandler::BESDataResponseHandler( const string &name )
48  : BESResponseHandler( name )
49 {
50 }
51 
52 BESDataResponseHandler::~BESDataResponseHandler( )
53 {
54 }
55 
71 {
72  dhi.action_name = DATA_RESPONSE_STR;
73  // NOTE: It is the responsibility of the specific request handler to set
74  // the BaseTypeFactory. It is set to NULL here
75  DataDDS *dds = new DataDDS(NULL, "virtual");
76  BESDataDDSResponse *bdds = new BESDataDDSResponse(dds);
77 
78  // Set the DAP protocol version requested by the client. 2/25/11 jhrg
79 
80  dhi.first_container();
81 
82  BESDEBUG("version", "Initial CE: " << dhi.container->get_constraint() << endl);
83 
84  // FIXME Keywords should not be used and this should be removed. jhrg 2/20/15
85  dhi.container->set_constraint(dds->get_keywords().parse_keywords(dhi.container->get_constraint()));
86  BESDEBUG("version", "CE after keyword processing: " << dhi.container->get_constraint() << endl);
87 
88  bool found;
89  string response_size_limit = BESContextManager::TheManager()->get_context("max_response_size", found);
90  if (found && !response_size_limit.empty()) {
91  char *endptr;
92  errno = 0;
93  long rsl = strtol(response_size_limit.c_str(), &endptr, /*int base*/ 10);
94  if (rsl == 0 && errno > 0) {
95  string err = strerror(errno);
96  delete dds; dds = 0;
97  delete bdds; bdds = 0;
98  throw BESInternalError("The responseSizeLimit context value ("
99  + response_size_limit + ") was bad: " + err, __FILE__, __LINE__);
100  }
101 
102  dds->set_response_limit(rsl); // The default for this is zero
103  }
104 
105  // FIXME This should be fixed too... (see above re keywords). jhrg 2/20/15
106  if (dds->get_keywords().has_keyword("dap")) {
107  dds->set_dap_version(dds->get_keywords().get_keyword_value("dap"));
108  }
109  else if (!bdds->get_dap_client_protocol().empty()) {
110  dds->set_dap_version(bdds->get_dap_client_protocol());
111  }
112 
113  _response = bdds;
114  BESRequestHandlerList::TheList()->execute_each(dhi);
115 }
116 
128 void
131 {
132  if( _response )
133  {
134  transmitter->send_response( DATA_SERVICE, _response, dhi ) ;
135  }
136 }
137 
144 void
145 BESDataResponseHandler::dump( ostream &strm ) const
146 {
147  strm << BESIndent::LMarg << "BESDataResponseHandler::dump - ("
148  << (void *)this << ")" << endl ;
149  BESIndent::Indent() ;
150  BESResponseHandler::dump( strm ) ;
151  BESIndent::UnIndent() ;
152 }
153 
155 BESDataResponseHandler::DataResponseBuilder( const string &name )
156 {
157  return new BESDataResponseHandler( name ) ;
158 }
159 
string get_dap_client_protocol() const
Return the dap version string sent by the client (e.g., the OLFS)
string get_constraint() const
retrieve the constraint expression for this container
Definition: BESContainer.h:170
exception thrown if inernal error encountered
response handler that builds an OPeNDAP Data DDS object
virtual string get_context(const string &name, bool &found)
retrieve the value of the specified context from the BES
virtual void dump(ostream &strm) const
dumps information about this object
handler object that knows how to create a specific response object
virtual void transmit(BESTransmitter *transmitter, BESDataHandlerInterface &dhi)
transmit the response object built by the execute command
virtual void execute_each(BESDataHandlerInterface &dhi)
for each container in the given data handler interface, execute the given request ...
void set_constraint(const string &s)
set the constraint for this container
Definition: BESContainer.h:104
Represents an OPeNDAP DataDDS DAP2 data object within the BES.
virtual void dump(ostream &strm) const
dumps information about this object
Structure storing information used by the BES to handle the request.
virtual void execute(BESDataHandlerInterface &dhi)
executes the command &#39;get data for <def_name>&#39; by executing the request for each container in the spe...
void first_container()
set the container pointer to the first container in the containers list
BESContainer * container
pointer to current container in this interface